1973 Wiper motor
73 Vette wiper motor was just clicking, read and did everything on here and elsewhere...thanks WILLCOX! Great info but no help
Replaced motor, clicks when switch was activated, no movement so unhooked it again. Did the Willcox bench test again, no movement, some clicking. Re-did all my wires for the bench test, applied power from Alternator post and the motor moved 1/2 turn and quit...nothing of any kind since. Fuse is good, power is good and double grounded to 2 different spots. Hooked everything back up from Wiper switch to the motor and nothing...Thanks in advance...
You have to get it to work on a bench test first. If it does not...then it is in the motor.
I know Willcox gave you solid information...but jsut incase something got lost somehow.
You have to have 3 grounds and one power.
One ground goes to the motor housing.MUST BE GROUNDED
Power goes to the CENTER terminal in the three terminals in a row.
Then the other two grounds are used to the outer terminals on each side of the center terminal.
There are three options of applying the grounds to the outer terminals...one terminal and NOT one on the other...then add a ground to the other terminal so there are grounds on BOTH terminals...and then remove the first ground you applied in the first option. This will give you PARK, LOW and HIGH speeds. I am not at work to tell you actually which outer terminals do what...but I know this is how it works and you can easily figure it out. I do it quite often when I have a problem wiper motor.
DUB
73 Vette wiper motor was just clicking, read and did everything on here and elsewhere...thanks WILLCOX! Great info but no help
Replaced motor, clicks when switch was activated, no movement so unhooked it again. Did the Willcox bench test again, no movement, some clicking. Re-did all my wires for the bench test, applied power from Alternator post and the motor moved 1/2 turn and quit...nothing of any kind since. Fuse is good, power is good and double grounded to 2 different spots. Hooked everything back up from Wiper switch to the motor and nothing...Thanks in advance...

New 1973-1982 Wiper Motor Testing.














